Probability with Replacement (Independent Events)
Trending Questions
Q. A box contains 7 white, 5 red and 3 black balls. Three balls are picked randomly one at a time, and are being replaced. What is the probability of picking a white then red then a black ball?
- 715
- 7225
- 13
- 14225
Q. A school purchased 50 computers for computer lab out of which 2 are defective. If two computers are randomly selected for inspection. What is the probability that both the computers are defective if replacement is allowed?
- 1625
- (450)2
- 0.0016
- 0.0064
Q. Each of the students in a particular class writes down a letter of her choice on a piece of paper and folds the paper to put it into a bowl. All the chosen letters are shown below.
Alex chooses a letter from the bowl randomly. What is the probability that Alex picks a paper with the first letter of his name written on it? After replacing the chosen paper with ‘A' in the bowl, he picks a letter again. What is the probability of picking the letter ‘S'?
Alex chooses a letter from the bowl randomly. What is the probability that Alex picks a paper with the first letter of his name written on it? After replacing the chosen paper with ‘A' in the bowl, he picks a letter again. What is the probability of picking the letter ‘S'?
- 117 and 417
- 217 and 317
- 317 and 217
- None of the above
Q. Jessy tossed a coin and rolled a dice having 6 faces. The probability of getting head on the coin and 4 on the dice is (upto two decimal places).
Q. Bag A contains 9 purple and 3 yellow marbles. Bag B contains 9 blue and 6 white marbles. What is the probability of picking one yellow marble from bag A and one blue marble from bag B?
- 19
- 14
- 320
- 1720
Q. Watson flips two fair coins, and in agreement with his friend Smith to give him $20 if both the coins land on tails. What is the probability (in percent) that Smith will get $20?
- 25
Q. John and his brother Phil both throw a six-sided fair die. Whoever gets a 6, will win. The probability of either John or Phil win is .
- 13
- 23
- 16
Q. Ten cards, numbered 11 to 20, are placed in a bowl. Two cards are randomly drawn one by one with replacement. What is the probability of drawing a card with an even number then a card with a number greater than or equal to fifteen?
- 14
- 12
- 35
- 310
Q. In a pack of 52 playing cards, three cards are drawn at random with replacement. What is the probability of getting Jack in all 3 draws?
- (452)2
- (113)3
- (313)3
- (352)3